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High Power Switch CA1 ; SA1 ; PA1

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Application: The favourite use of the Thermal Protectors (TP) A1 (normally closed) is in electrical appliances where a reliable detecting of current and temperature is indicated. These applications can be motors, transformers, ballasts and other electrical equipment. The switch excels with a typical short tripping time. The TP characterizes its ability to stand high current load in spite of a small design. Therefore the ALHA 1 is able to switch the current directly in a disturbed condition of the application. The switch is impregnation resistant and is available in different connecting versions.

Design: The switch has been created with a totally new design. It is equipped with a high capacity contact mechanism, wherein a current flowed frame spring ensures the necessary contact pressure. The contact mechanism can be produces fully automatically with a max. capacity of 10 Million pieces/year. Due to changing of particular parameters during manufacturing a short tripping time is realized. The bimetal disc is working under perfect conditions because of no current flow through the material.
Versions :
  • SA1 - with lead wires and with insulation cap
  • CA1 - with lead wires and without insulation cap
  • PA1 - with connecting pins

    Operation: If the rated switching temperature of the bimetallic disc is reached, it suddenly snaps and opens the contacts. Physical values which influence the tripping behavior are:
    • heating of the current floated frame spring
    • thermal transfer
    • a combination of both
    After cooling down beyond its resetting temperature, the contact mechanism turns back in its initial position.



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      Results 1 - 3 of 3 1 

    Item #

    Item Name

    Width b

    Height h

    Lengths of Insulation Cap Imax

    Contact Type

    Nominal Switching Temperature

    Basic Insulation

    CA1 High Power Switch CA1 with lead wires and without insulation cap 10.8 mm 5.1 mm N/A Normally Closed (NC) 70 - 160 ºC N/A
    SA1 High Power Switch SA1 with lead wires and with insulation cap 10.8 mm 5.1 mm 32.5 mm Normally Closed (NC) 70 - 160 ºC Insulation Cap: Mylar - Nomex ®
    PA1 High Power Switch PA1 with connecting pins 10.8 mm 5.1 mm N/A Normally Closed (NC) 70 - 160 ºC N/A
      Results 1 - 3 of 3 1